The official microblog of China Central Television Station (CCTV) Financial Channel has reported on a ‘big data’ survey concerning opportunities, wealth, time and happiness in China in 2015.

The key findings included:

1. About 40 percent of Chinese people think they live happy lives.

2. Chinese people typically named improving air quality as the most important environmental issue to address.

3. 67.6 percent of Chinese households reported confidence in the security of their income, down from 75.4 percent in 2014.4. More than 50 percent of Chinese people have less than two hours of leisure time per day.5. Those who often resort to "phubbing," which describes the habit of snubbing someone in favor of a mobile phone, tend to have lower incomes than others.

6. Residents of Changchun in the province of Jilin have the longest commute in the country.

7. Hefei, the capital of Anhui Province, tops this year's list of the Chinese cities with the happiest residents.

The data, published on 2nd March, was derived from a survey of 100,000 questionnaires submitted by 100,000 families in 104 cities and 300 counties.